iphone

앱 수명주기 관리 는 질문에 도움이됩니다. 빠른 개념을 위해 해당 문서의 그림을 볼 수 있습니다. XCode 마법사가 생성 한 코드에서 주석을 읽을 수도 있습니다. 다음과 같이 나열됩니다.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
    /*
     Sent when the application is about to move from active to inactive state.
     This can occur for certain types of temporary interruptions (such as an
     incoming phone call or SMS message) or when the user quits the application
     and it begins the transition to the background state.
     Use this method to pause ongoing tasks, disable timers, and throttle down
     OpenGL ES frame rates. Games should use this method to pause the game.
     */
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    /*
     Use this method to release shared resources, save user data, invalidate
     timers, and store enough application state information to restore your
     application to its current state in case it is terminated later.
     If your application supports background execution, this method is called
     instead of applicationWillTerminate: when the user quits.
     */
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    /*
     Called as part of the transition from the background to the active state;
     here you can undo many of the changes made on entering the background.
     */
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    /*
     Restart any tasks that were paused (or not yet started) while the
     application was inactive. If the application was previously in the
     background, optionally refresh the user interface.
     */
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    /*
     Called when the application is about to terminate.
     Save data if appropriate.
     See also applicationDidEnterBackground:.
     */
}

자세한 설명은 UIApplicationDelegate 공식 문서를 참조하십시오

답변

- (void)sceneWillEnterForeground:(UIScene *)scene
- (void)sceneDidBecomeActive:(UIScene *)scene